Leaf morphology and anatomy of Schlechtendalia luzulifolia, a basal member of subfamily Barnadesioideae (Asteraceae) DOI
Estrella Urtubey,

María C Klusch,

Tod F. Stuessy

и другие.

Botanical Journal of the Linnean Society, Год журнала: 2023, Номер 203(4), С. 337 - 349

Опубликована: Авг. 19, 2023

Abstract Based on molecular phylogenetic studies, Barnadesioideae have been proposed to be the basal subfamily of Asteraceae. This is a complex 10 genera and 87 species distributed primarily along Andean mountains, Patagonia, into southern Brazil Uruguay. Phylogenetic analyses recovered all as monophyletic groups provided insights their inter-relationships. Four generic clades substantiated: (1) Chuquiraga, Doniophyton, Duseniella; (2) Dasyphyllum; (3) Barnadesia Huarpea; (4) Archidasyphyllum, Arnaldoa, Fulcaldea. The remaining genus, monospecific Schlechtendalia, has an outlier in subfamily, with some previous recovering it for entire others showing sister Huarpea (with weak support) well other genera. Recent massive sampling loci confirmed Schlechtendalia genus subfamily. luzulifolia morphology atypical capitula are loose aggregations florets, leaves long strap shaped, more reminiscent monocots. Morphological anatomical investigations reveal long, laminar blades parallelodromous vascularization. vesture often ‘barnadesioid trichomes’, especially towards base plant, plus additional uniseriate trichomes consisting 3 many cells, newly reported Some glandular 2-4 short cells also occur. transverse anatomy reveals single epidermal layer both surfaces, which contain stomata (the leaf being amphistomatic). mesophyll undifferentiated; vascular traces surrounded by sclerenchyma that not only encircles but extends epidermis connects it. divergent comparison adaptations survival xeric habitats, such dense pubescence, grey revolute margins. contrast, adapted mesic environment, near Atlantic Ocean Uruguay La Plata rivers. oriented upright, correlates undifferentiated layers. stem underground rhizome, adaptation permits during seasonal drought austral summer adjacent regions. It hypothesized may become environments Miocene prior rise Andes development modern arid environments, subsequently radiated.

Язык: Английский

A focus on European plants: origins, hybridization and biogeography DOI Open Access
Michael F. Fay

Botanical Journal of the Linnean Society, Год журнала: 2023, Номер 201(3), С. 257 - 259

Опубликована: Фев. 24, 2023

Journal Article A focus on European plants: origins, hybridization and biogeography Get access Michael F Fay Royal Botanic Gardens, Kew, Richmond, Surrey, TW9 3AB, UKSchool of Plant Biology, University Western Australia, Crawley, WA 6009, Australia [email protected] https://orcid.org/0000-0003-3491-9093 Search for other works by this author on: Oxford Academic Google Scholar Botanical the Linnean Society, Volume 201, Issue 3, March 2023, Pages 257–259, https://doi.org/10.1093/botlinnean/boad005 Published: 24 February 2023

Язык: Английский

Процитировано

0
Phylogenomic Analysis of Dichrocephala benthamii and Comparative Analysis within Tribe Astereae (Asteraceae) DOI Creative Commons

Hui Chen,

Junjia Luo, Xiaofeng Liu

и другие.

Research Square (Research Square), Год журнала: 2023, Номер unknown

Опубликована: Июнь 15, 2023

Abstract Dichrocephala benthamii C. B. Clarke has long been used as traditional Chinese medicine. However, the chloroplast (cp) genome of D. is poorly understood so far. In this study, we have sequenced and analyzed cp . The results show that 152,350 bp in length, with a pair inverted repeat regions (IRa IRb, each 24,982 bp), large single-copy (LSC) region comprising 84,136 bp, small (SSC) 18,250 bp. GC content was 37.3%. A total 134 genes were identified, including 87 protein-coding (CDS), 38 tRNA genes, 8 rRNA 1 pseudogene ( ycf1 ). plastome includes simple repeats 48 repeats. phylogenetic analysis reveals basal group Astereae. Therefore, confirm taxa Astereae emerges from southern Africa dispersed to other big continents. study are significant contribution field genetics species identification related D

Язык: Английский

Процитировано

0
Compositae-ParaLoss-1272: Complementary sunflower specific probe-set reduces issues with paralogs in complex systems DOI Open Access
Erika R. Moore‐Pollard, Daniel S. Jones, Jennifer R. Mandel

и другие.

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2023, Номер unknown

Опубликована: Июль 21, 2023

ABSTRACT Premise The sunflower family specific probe set, Compositae-1061, has enabled family-wide phylogenomic studies and investigations at lower-taxonomic levels by targeting 1,000+ genes. However, it generally lacks resolution the genus to species level, especially in groups with complex evolutionary histories including polyploidy hybridization. Methods In this study, we developed a new Hyb-Seq Compositae-ParaLoss-1272, designed target orthologous loci Asteraceae members. We tested its efficiency across simulating target-enrichment sequencing silico. Additionally, effectiveness lower taxonomic Packera which history. performed Compositae-ParaLoss-1272 for 19 taxa were previously studied using Compositae-1061 set. Sequences from both sets used generate phylogenies, compare topologies, assess node support. Results report that captured all had less gene tree discordance, recovered considerably fewer paralogous sequences, retained longer than Compositae-1061. Discussion Given complexity of plant histories, assigning orthology analyses will continue be challenging. anticipate set provide improved utility family.

Язык: Английский

Процитировано

0
Leaf morphology and anatomy of Schlechtendalia luzulifolia, a basal member of subfamily Barnadesioideae (Asteraceae) DOI
Estrella Urtubey,

María C Klusch,

Tod F. Stuessy

и другие.

Botanical Journal of the Linnean Society, Год журнала: 2023, Номер 203(4), С. 337 - 349

Опубликована: Авг. 19, 2023

Abstract Based on molecular phylogenetic studies, Barnadesioideae have been proposed to be the basal subfamily of Asteraceae. This is a complex 10 genera and 87 species distributed primarily along Andean mountains, Patagonia, into southern Brazil Uruguay. Phylogenetic analyses recovered all as monophyletic groups provided insights their inter-relationships. Four generic clades substantiated: (1) Chuquiraga, Doniophyton, Duseniella; (2) Dasyphyllum; (3) Barnadesia Huarpea; (4) Archidasyphyllum, Arnaldoa, Fulcaldea. The remaining genus, monospecific Schlechtendalia, has an outlier in subfamily, with some previous recovering it for entire others showing sister Huarpea (with weak support) well other genera. Recent massive sampling loci confirmed Schlechtendalia genus subfamily. luzulifolia morphology atypical capitula are loose aggregations florets, leaves long strap shaped, more reminiscent monocots. Morphological anatomical investigations reveal long, laminar blades parallelodromous vascularization. vesture often ‘barnadesioid trichomes’, especially towards base plant, plus additional uniseriate trichomes consisting 3 many cells, newly reported Some glandular 2-4 short cells also occur. transverse anatomy reveals single epidermal layer both surfaces, which contain stomata (the leaf being amphistomatic). mesophyll undifferentiated; vascular traces surrounded by sclerenchyma that not only encircles but extends epidermis connects it. divergent comparison adaptations survival xeric habitats, such dense pubescence, grey revolute margins. contrast, adapted mesic environment, near Atlantic Ocean Uruguay La Plata rivers. oriented upright, correlates undifferentiated layers. stem underground rhizome, adaptation permits during seasonal drought austral summer adjacent regions. It hypothesized may become environments Miocene prior rise Andes development modern arid environments, subsequently radiated.

Язык: Английский

Процитировано

0